|Year|Competition|Venue|Position|Event|Notes|
|---|---|---|---|---|---|
|2001|Asian Junior Championships|Bandar Seri Begawan, Brunei|1st|110 m hurdles|14.05|
|2002|World Junior Championships|Kingston, Jamaica|2nd|110 m hurdles|13.58|
|2002|Asian Games|Busan, South Korea|4th|110 m hurdles|13.92|
|2003|World Indoor Championships|Birmingham, United Kingdom|18th (h)|60 m hurdles|7.81|
|2003|World Championships|Paris, France|6th|110 m hurdles|13.55|
|2003|Asian Championships|Manila, Philippines|1st|110 m hurdles|13.50|
|2004|World Indoor Championships|Budapest, Hungary|17th (h)|60 m hurdles|7.75|
|2004|Olympic Games|Athens, Greece|33rd (h)|110 m hurdles|13.68|
|2005|World Championships|Helsinki, Finland|9th (sf)|110 m hurdles|13.44|
|2005|Asian Championships|Incheon, South Korea|2nd|110 m hurdles|13.44|
|2006|World Indoor Championships|Moscow, Russia|8th (sf)|60 m hurdles|7.63|
|2006|Asian Games|Doha, Qatar|2nd|110 m hurdles|13.28|
|2007|World Championships|Osaka, Japan|5th|110 m hurdles|13.19|
|2008|World Indoor Championships|Valencia, Spain|9th (sf)|60 m hurdles|7.65|
|2008|Olympic Games|Beijing, China|8th (sf)|110 m hurdles|13.42|
|2009|Asian Championships|Guangzhou, China|2nd|110 m hurdles|13.67|
|2009|World Championships|Berlin, Germany|8th (sf)|110 m hurdles|13.42|
|2010|World Indoor Championships|Doha, Qatar|16th (sf)|60 m hurdles|7.82|
|2010|Asian Games|Guangzhou, China|2nd|110 m hurdles|13.38|
|2011|Asian Championships|Kobe, Japan|2nd|110 m hurdles|13.56|
|2011|World Championships|Daegu, South Korea|9th (sf)|110 m hurdles|13.57|
|2012|World Indoor Championships|Istanbul, Turkey|24th (h)|60m hurdles|8.15|
|2012|Olympic Games|London, United Kingdom|37th (h)|110 m hurdles|13.78|

Question: how many 110 m hurdles did china compete in?
Answer: 17